Madonna, the original, has your back this spring with these nylon men's backpacks from Givenchy. Leave it to Renaissance man Riccardo Tisci to hybridize religious and street influences to create a must-sport that even the new pontiff would approve of.

Not like she needs the height, but extra-amazon glamazon Anja Rubik has collaborated with Italian shoemaker Giuseppe Zanotti on an accessories line consisting mostly of high-high heels. Specifically, the capsule includes one bag and five shoe styles—again, mostly heels and exactly one pair of gladiator-style flats—with over-the-top details like corseting and gold studs.

Here's something only a stoner could think of. The folks at Shwood, the Portland-based makers of wooden sunglasses, have taken a chip off the old block and made the first slate-framed sunnies, combined with a birch and hand-poured pewter. Two wayfarer styles come in either black or white slate. These aren't farmed out to a manufacturer, but crafted in Shwood's own workshop, where they also do all the veneering and lens-cutting, so you'll have to forgive them for limiting the stone sunglasses to 200 pairs.

Only bad things come in envelopes anymore—bills, junk, jury summonses. But the Brooklyn-based accessories label Fleabags are out to change that with their cheery envelope bags, made in collaboration with VPL. Colorful and minimal, they're guaranteed to lift your mood. And there's more to feel good about. They're handmade in small production runs using organic materials, and vegetable-tanned and re-purposed leathers. Talking about pushing the envelope.

Saving his wilder ideas for the runway, Riccardo Tisci has launched sorta a tame line of men's sunglasses for Givenchy consisting solely of classic wayfarers and aviators. You could say the line is inspired by—gasp!—vintage. Of course, it's fairly radical in its own small ways. Leather or wooden inserts can be found in the aviators, while a small metal chain appears at temples and a wayfarer model comes with metal-rimmed lenses that clip onto the front.

Part thigh-high boot, part femme-bot leg, the crazy concoction in the center of the image below is one of a four-style collaboration between Prabal Gurung and luxury shoemakers Casadei. Seen on the designer's fall runway, the small feats of engineering—in suede, croc-print leather, or snake—feature the Italian company's Blade heel, basically a five-inch razor-like blade welded to the upper sole. For the squeamish out there, lavender has a softening effect, but really, the squeamish need not apply.

It's a little hard to explain, but we'll give it a go. For spring, New York-based shoe designer Alejandro Ingelmo, who's usually influenced by his Cuban heritage, drew inspiration from classic Americana—particularly New England—to create his Made in Maine men's shoes. They actually are made in Maine, handcrafted in a small factory, and they are reminiscent of a retro-coastal style, but they also hark back to 80s goth. Penny loafers and boat shoes in black, brown and bright fluoro shades are given thick creeper soles, like a Cure concert on a ship. Should you get a little seasick from all the references, just think Siouxsie and the Preppies.

Nicola Formichetti envisaged Mugler's bags for spring, his first for the 40-year-old label, to be angular and rigid, in homage to Thierry Mugler's wildly sculptural creations. "This is now my fourth collection as creative director of Mugler," he says, "and following the evolution of the brand, I was interested in creating sculptured objects in 3D."

But while you won't see a motorcycle handlebar bodysuit or insect exoskeleton dress, famously created by the namesake designer, you will see Formichetti's interpretation of Lady Gaga's trim derriere, reportedly the inspiration for the first two bags in this slideshow. Of course, the sometime muse of the house doesn't come cheap. Expect to shell out $2100 for the patent leather version and up to $18,000 for patent croc.

Available at Barneys New York, Maxfield, Opening Ceremony, Patron of the New, Joan Shepp, and Shopbop.com, beginning February.

MYKITA is back with another high-concept collaboration for spring. This time the Berlin eyewear label has harnessed the vision of Damir Doma. The Paris-based, Antwerp-schooled designer studiously captured the unique blend of hard and soft, rough and smooth, cool and warm found in his own mens and women's collections to create round sunnies made from otherworldly stainless steel and details of horn, with its natural grains. The result, DD01, is a reference to the circular glasses worn by the intellectual avant-garde throughout modern history.

At all MYKITA shops, the Damir Doma flagship, as well as select opticians beginning in spring 2013

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